Mazda MPV 1999-06

Exhaust Manifold

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Removal & Installation



2.5L And 3.0L Engines
  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Remove or disconnect the following:

    Negative battery cable
     
    Subframe transverse section
     
    Heated Oxygen (HO2S) sensor connectors
     
    Exhaust front pipe
     
    Exhaust Gas Recirculation (EGR) pipe
     
    Exhaust manifolds
     

  4.  

To install:



Click image to see an enlarged view

Fig. Right exhaust manifold torque sequence-2.5L and 3.0L engine



Click image to see an enlarged view

Fig. Left exhaust manifold torque sequence-2.5L and 3.0L engine

  1. Install or connect the following:

    Exhaust manifolds. Tighten the nuts in sequence to 14 ft. lbs. (20 Nm).
     
    EGR pipe
     
    Exhaust front pipe
     
    HO2S sensor connectors
     
    Subframe transverse section. Tighten the bolts to 69-96 ft. lbs. (94-131 Nm).
     
    Negative battery cable
     

  2.  
  3. Start the engine and check for leaks.
  4.  

2.5L Engine
  1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
  2.  
  3. Remove or disconnect the following:

    Negative battery cable
     
    Subframe transverse section
     
    Heated Oxygen (HO 2 S) sensor connectors
     
    Exhaust front pipe
     
    Exhaust Gas Recirculation (EGR) pipe
     
    Exhaust manifolds
     

  4.  

To install:

Click image to see an enlarged view

Fig. Right exhaust manifold torque sequence-2.5L engine



Click image to see an enlarged view

Fig. Left exhaust manifold torque sequence-2.5L engine

  1. Install or connect the following:

    Exhaust manifolds. Tighten the nuts in sequence to 14 ft. lbs. (20 Nm).
     
    EGR pipe
     
    Exhaust front pipe
     
    HO 2 S sensor connectors
     
    Subframe transverse section. Tighten the bolts to 69-96 ft. lbs. (94-131 Nm).
     
    Negative battery cable
     

  2.  
  3. Start the engine and check for leaks.
  4.  

  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Remove or disconnect the following:

    Negative battery cable
     
    Subframe transverse section
     
    Heated Oxygen (HO 2 S) sensor connectors
     
    Exhaust front pipe
     
    Exhaust Gas Recirculation (EGR) pipe
     
    Exhaust manifolds
     

  4.  

To install:

Click image to see an enlarged view

Fig. Right exhaust manifold torque sequence-2.5L engine



Click image to see an enlarged view

Fig. Left exhaust manifold torque sequence-2.5L engine

  1. Install or connect the following:

    Exhaust manifolds. Tighten the nuts in sequence to 14 ft. lbs. (20 Nm).
     
    EGR pipe
     
    Exhaust front pipe
     
    HO 2 S sensor connectors
     
    Subframe transverse section. Tighten the bolts to 69-96 ft. lbs. (94-131 Nm).
     
    Negative battery cable
     

  2.  
  3. Start the engine and check for leaks.
  4.  

3.0L Engine
  1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
  2.  
  3. Remove or disconnect the following:

    Negative battery cable
     
    Engine under cover
     
    Heated Oxygen (HO 2 S) sensor connectors
     
    Exhaust front pipe
     
    Exhaust manifold heat shields
     
    Cross over pipe
     
    Exhaust manifolds
     

  4.  

To install:


NOTE
Use new fasteners and gaskets for assembly.

  1. Install or connect the following:

    Exhaust manifolds. Tighten the fasteners to 16-20 ft. lbs. (22-28 Nm).
     
    Cross over pipe. Tighten the bolts to 12-16 ft. lbs. (16-22 Nm).
     
    Exhaust manifold heat shields. Tighten the bolts to 14-18 ft. lbs. (19-25 Nm).
     
    Exhaust front pipe. Tighten the nuts to 28-38 ft. lbs. (38-51 Nm).
     
    HO 2 S sensor connectors
     
    Engine under cover
     
    Negative battery cable
     

  2.  
  3. Start the engine and check for leaks.

    Click image to see an enlarged view

    Fig. Exploded view of the exhaust system-3.0L engine

  4.  

  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Remove or disconnect the following:

    Negative battery cable
     
    Subframe transverse section
     
    Heated Oxygen (HO 2 S) sensor connectors
     
    Exhaust front pipe
     
    Exhaust Gas Recirculation (EGR) pipe
     
    Exhaust manifolds
     

  4.  

To install:

Click image to see an enlarged view

Fig. Right exhaust manifold torque sequence-3.0L engine



Click image to see an enlarged view

Fig. Left exhaust manifold torque sequence-3.0L engine

  1. Install or connect the following:

    Exhaust manifolds. Tighten the nuts in sequence to 15-18 ft. lbs. (20-25 Nm).
     
    EGR pipe
     
    Exhaust front pipe
     
    HO 2 S sensor connectors
     
    Subframe transverse section. Tighten the bolts to 69-96 ft. lbs. (93-131 Nm).
     
    Negative battery cable
     

  2.  
  3. Start the engine and check for leaks.
  4.  

 
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